Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
calcāta, ae, f., an uncertain reading in Auct. B. Hisp. 16, which, acc. to the context, signifies the material for filling ditches, fascines; a marginal reading is crates; other MSS. cultatas and culcatas; v. Oud. in h.l.